Site Records

Brompton Road

The Brompton Road underground station closed on 29th July 1934, because the
nearby Knightsbridge station (which had been rebuilt to allow
a direct connection to Harrods) was so near.

It was taken over and converted into the Royal
Artillery's Anti-Aircraft Operations Room (AAOR) for central London.
(The exact date is uncertain: it could have been a WWII AAOR
or a 1950s one.)

To facilitate the use of the station, two of the four lift/access shafts were
floored over at intervals of about 15 feet, and a staircase inserted,
thus providing all the necessary office and room space in these two
shafts. Of the other two shafts, one was retained for ventilation and
the other for a full staircase from the surface to the lowest level.

At the bottom of the two office shafts, at the lowest level, one was
used as the operations room. This is circular and although fairly cramped
it retains the shell of a typical AAOR ops room in miniature. The other
was used for the ventilation blowers.

The access passageways at the lowest level are used for electrical
switchgear and gas filtration. Staircases then go down to the platform tunnels,
which are walled off from the train lines. The eastbound platform was
used as the teleprinter and communications station, and the westbound one
was used for a rest area, staff space and a briefing cinema in which the
screen can still be found. Some of the original tiling is still in place
on the walls.

The whole area is very dusty (mostly asbestos dust from the train brake
linings). It is quite well preserved, having never been used since 1955
when the AAOR programme became defunct. The below-ground section is owned
by London Underground, while the surface building is owned by the Ministry
of Defence and used by the University Air Squadron.

Neither owner allows any access to the other's section, and visits are never
allowed on grounds of safety and security. It is not possible to access the
site from the surface. An attempt was made to enter the site about five
years ago and this resulted in the dead body of the `visitor' being found
a month later at the bottom of the 110 ft. ventilation shaft, which he had
apparently fallen through from the roof above.

The photographs shown are quite unique and believed to be first taken since
the 1950s. The author and Mr John Harris were given special access by LUL
and the MoD. In some places original notices about the AAOR can still be found
on the walls signed by the commanding officer of the day.

Out of interest, Down Street station (on the same line) was Churchill's
favourite WWII war room. This can be visited on special trips arranged
by London Underground about twice a year. Sir Winston was not too keen
on the Cabinet War Rooms or Paddock which, although purpose built
at Dollis Hill, was only used once and
is now derelict.